A) \[{{r}^{2}}\]
B) \[r\]
C) 2r
D) \[2{{r}^{2}}\]
Correct Answer: B
Solution :
As, \[V'=-KXY\]represents the case of dependence of three variables simultaneously. \[\Rightarrow \] \[\varepsilon =\left[ \frac{\partial V}{\partial X}1+\frac{\partial V}{\partial X}j \right]=K(Yi+Xj)\] \[\Rightarrow \] \[\varepsilon =\sqrt{\varepsilon _{X}^{2}+\varepsilon _{Y}^{2}}\] \[\sqrt{{{({{K}_{Y}})}^{2}}+{{({{K}_{X}})}^{2}}}=Kr\] i.e, \[\varepsilon \propto r\] (as, \[r=Xi+Yj\])You need to login to perform this action.
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